package cn.qiao.demo;

import cn.qiao.demo.demo.PubishSuccessDto;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantLock;

/**
 * desc: io功能演示的demo
 *
 * @author qiao
 * @date 2022年10月19日 22:33
 */
public class IODemo {

    public static void main(String[] args) {
//        File file = new File();
//        FileInputStream fileInputStream = new FileInputStream();
//        BufferedInputStream bufferedInputStream = new BufferedInputStream();
        ReentrantLock lock = new ReentrantLock();
        lock.lock();

        ConcurrentHashMap<Object, Object> currentHashMap = new ConcurrentHashMap<Object, Object>();
        currentHashMap.put("ces","ces");

        ArrayList<String> strings = new ArrayList<String>();
        strings.add("a");
        LinkedList<String> strings1 = new LinkedList<String>();
        strings1.add("b");
        float f = 3.1f;
    }








}
